Very nice - have bid and lost on one of these a couple of years ago (on US eBay). Seem very similar to the Control Tech sweet spot frame I saw on our Peaks ride 2009....
Thank you Mr K.
These URT/Sweet Spot bikes benefit greatly from modern day platform forks, like the SPV Manitou Minute I am running. The SPV helps negate the inch worm effect these bikes have when applying just the front brake. As a result, these bikes ride/perform better now in 2010 than back in the 1990's IMO.
The inventor of the Sweet Spot design, John Castellano, recently introduced his updated version called the Zorro.
(As a footnote, the Catamount was technically not a Sweet Spot bike and didn't fall under that patent. The Cat's shock placement was different, being directly under the seatpost, where as Sweet Spot bikes had their shock mounted behind the post.)